Welding torch



Mg. 21, 1923. 7 11,465,390 W. J. FRANK WELDING TORCH Filed March 1, 1922 W/f/VES'SES NVVENTUR 'fi-Jz raivir,

A TTOR/VEVS Patented Aug. 21, 1923.

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WILLIAM JOSEPH FRANK, OF BALTIMORE, MARYLAND.

WELDING 'ronorr.

Applicationfiled March. 1, 1922.]Seria1 No, 540,135.

To all whom it'maly concern: j

Be it known that I, WILLIAM 'JosnPH I1RANK,L citizen of the United States, and

a resident of Baltimore, in the State of Maryland, have invented certain new and useful Improvements in l/Velding Torches, of which the following is a specification.

My invention relates to torches for use in welding metal, and it consists in the combinations, constructions and arrangements herein described and claimed.

An object ofmy invention is to provide a welding torch of simple construction which will permit of the use of a plurality of tips selectively, whereby the torch can be readily adapted by tip selection for use in welding operations ordinarily requiring the employment of a welding torch designed for either heavy or'light work, according tothe particular service requirements.

A further object'of my invention is to provide a torch of the character described which is constructed in such a manner as to preclude the possibility of retardation lined in the appended claims.

My invention is illustrated in the accompanying drawings, forming a part'of this specification, in which Fig. 1 is a plan view of my improved torch, r r

Fig. 2 is a simple view of a fragmentary portion of the torch, the head and tip thereof being shown in section,

Fig. 3 is a section along the line 38 of Fig. 2, and

Fig. 4 is a section along the line 4- of Fig. 2.

Referring now to the drawings, in which like reference numerals are employed to designate like parts throughout the several views, the numerals 1 and 2 denote delivery tubes extending through a handle 3 and maintained in spaced apart parallel relation by their engagement with the handle.

Each of the delivery tubes 1 and 2 is fashioned at its'rear end for connection with a hose, such as indicated at l, and each is controlled by a valve 5 associated therewith adjacent to its rear end. The valves 5 may be of any suitable known type of construction and in consequence have been shown diagrammatically in the drawings.

' The tubes 1 and 2 extend in parallel re lation in advance of the handle 3 and are symmetrically curved or bent adjacent to their forward ends, as shown in the draw ings, whereby the forward ends of the tubes 1 and 2 arefiush with each other.

A; head 6 is provided with spaced-apart sockets 7 and 8 in its rearward end, in which theforward ends of the tubes 1 and 2 respectively, are received and permanently secured, as by brazing. Ducts 9 and 10 lead from the bottoms of the sockets 7 and 8, respectively, to a central chamber 11. The chamber 11 has a counterbore 12 formed to provide a bell mouth 18 opening through the front end of the head.

A tip 14, which is formed in one piece, is enlarged externally adjacent to its rearward end, as at 15, and the end walls of. the enlarged portion are formed'to closely fit within the bell mouth 13 and the counter bore 12 of the head. The tip 14: tapers at its forward end and is provided with an axial passage 16 enlarged adjacent to the rearward end of the tip to provide a conoidal chamber 17 adapted to register with the chamber 11 in the confronting end of the head when the enlarged portion of the tip is seated in the bell mouthed counterbore of the head. A coupling nut 18 thread edly engages the head 6 and holds the tip 14; firmly against its seat.

The coupling nut 18 is preferably formed with a plurality of faces such as indicated at 19, on its outer periphery to permit of convenient manipulation and engagement by a wrench, or like tool.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. When the delivery tubes 1 and 2 are operatively connected with suitable sources of fuel supply through the agency of the hose 4:, as for instance tanks containing oxygen and acetylene, respectively, it will be obvious that the flow of the oxygen and acetylene respectively, into the mixing chamber 11,

which is in the head, and the commingling of the elements of the combustible fuelis consummated in the head and prior to the passage'of such fuel into the tip, '01 not later than the passage of the elements of the mixture into the conoidal chamber fl? of the tip. am thus enabled, by selecting tips having-{bores of different diameters, to vary my improved torch for use inser'vice heretofore requiring the employment of a plurality of torches, each of which was designed for a particular kind of Work,"

Another important feature of my invention is the provision of the belhmouthed coun'terbore 12 for the chamber ll and'th'e fashioning of the enlarged rearward end portion of the tip to seat against the bottom Wall of the counterbore and-against'the bell mouth thereof, whereby the tip is held in close Contact with the head and leak-age of fuel between the head and the rearward end of the tip'is eifectively precluded l'f I claim f1. jIn-a torch, av head having a socket in itsrear endfa central chamber provided with a bell mouthed counterbore opening through the front endiof the head, and a duct connecting the socket and the chamher, atip having the rear end portion there- 7 of formed to closely fit within the bell mouthed'couiiterboi'eand having an axial passage extending therethi ough, said passage being enlargedadjaeenttothe rearend ad pted to 'ii 'eis' r at -t n 'v tl h 1 and m s b 'm n e l ilng th tip e ted ineans' engaging the enlarged end portion of the ip d'th he d fet bil ng 121 6 0 16 clamped a bore injth latter; 1. 7

view; esse; FRANK r'ch', a head having a i central against he va di'thbeun 

